<!DOCTYPE HTML>
<meta charset=utf-8>
<title>Bug 520992</title>

<style>
  #borderBox {
    background:gold;
    height:100px;
    box-sizing:border-box;
  }

</style>

<div id="borderBox"></div>
<p id="heightWidth1"></p>

<script>
  var divs = document.getElementsByTagName("div");
  var textEle1 = document.getElementById("heightWidth1");
  textEle1.innerHTML += "height = " + getComputedStyle(divs[0]).height;
  textEle1.innerHTML += ", width = " + getComputedStyle(divs[0]).width;
</script>
